ltc → spi Relation

File in src/app/driver/mic/ltc	Includes file in src/app/driver/spi
6806 / config / ltc_6806_cfg.h	spi.h
6813-1 / config / ltc_6813-1_cfg.h	spi.h
common / ltc_defs.h	spi.h
common / ltc_mic_dma.c	spi.h